ASoC: wm1250-ev1: Support stereo

Springbank can support stereo, though it is primarily intended for mono
use cases.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm1250-ev1.c

@@ -84,14 +84,14 @@ static struct snd_soc_dai_driver wm1250_ev1_dai = {
 	.playback = {
 		.stream_name = "Playback",
 		.channels_min = 1,
-		.channels_max = 1,
+		.channels_max = 2,
 		.rates = SNDRV_PCM_RATE_8000,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE,
 	},
 	.capture = {
 		.stream_name = "Capture",
 		.channels_min = 1,
-		.channels_max = 1,
+		.channels_max = 2,
 		.rates = SNDRV_PCM_RATE_8000,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE,
 	},